Which of the following statements regarding species interdependence are true?

$I.$ An Association of two species where one is benefitted and other remains unaffected is called mutualism.

$II.$ An interspecific association where both partners derive benefit from each other is called commensalism.

$III.$ A direct food relation between two species of animals in which one animal kills and feeds on another is referred as predation.

$IV.$ A relationship between two species of organisms where both are partners are

benefitted from each other is called symbiosis

You never see any cattle or goat browsing on Calotropis due to

Mycorrhizae are the example of

Predators also help in …$A$… species diversity in a community, by … $B$… the intensity of competition among competing prey species. Here $A$ and $B$ can be